| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| | 20-F | 20-F | 20-F |
| Net income | -129.3 | -152.2 | -91.6 |
| Depreciation and amortization | 2.7 | 1.9 | 0.6 |
| Stock-based compensation | 73.5 | 64.3 | 21.8 |
| Change in working capital [+] | 84.4 | 63.4 | 43.1 |
| Accounts receivable | -4.6 | -0.5 | -3.1 |
| Other current assets | -13.3 | -1.8 | -1.3 |
| Accounts payable | -2.0 | 6.8 | 8.9 |
| Accrued expenses | 25.6 | 14.6 | 5.6 |
| Deferred revenues | 63.7 | 29.7 | 22.5 |
| Other | 15.0 | 14.6 | 10.6 |
| Other operating activities | -15.0 | -14.6 | -10.5 |
| Cash from operations | 16.4 | -37.2 | -36.7 |
| |
| Capital expenditures [+] | -13.8 | -5.5 | -1.8 |
| Purchases of property and equipment | -11.6 | -4.4 | -1.4 |
| Capitalized product costs | -2.2 | -1.1 | -0.4 |
| Sales of property and equipment | 0.1 | | |
| Other cash from investing | 10.0 | -6.0 | 15.0 |
| Cash from investing | -3.6 | -11.5 | 13.2 |
| |
| Issuance of common stock, net | 735.9 | | |
| Option exercises | 5.2 | 0.5 | 0.1 |
| Other cash from financing | 11.7 | 9.0 | 158.5 |
| Cash from financing | 742.3 | 8.5 | 158.4 |
| |
| Free cash flow | 4.8 | -41.5 | -38.1 |
| Per share (diluted) | $0.09 | ($3.54) | ($3.39) |
| |
| Cash paid for interest | 0.4 | 0.7 | 0.5 |